diff --git a/kholidays/holidays/holiday_it b/kholidays/holidays/holiday_it
index ef7ae67ef..2428122a4 100644
--- a/kholidays/holidays/holiday_it
+++ b/kholidays/holidays/holiday_it
@@ -1,29 +1,64 @@
 :
 : Italian holiday file.
 : by Riccardo Scateni (riccardo@crs4.it)
+: Updated and maintained by the Italian l10n team (kde-i18n-it@kde.org)
 :
-"Capodanno" weekend on 1.1
-"Epifania" weekend on 6.1
-small "Festa della donna" on 8.3
-small "S.Giuseppe" on 19.3
-small "Giovedi Grasso" on easter minus 52 days
-small "Martedi Grasso" on easter minus 47 days
-small "Ceneri" on easter minus 46 days
-"Pasqua" weekend on easter
-"Lunedi dell'Angelo" weekend on easter plus 1 day
-small "Pentecoste" weekend on easter plus 49 days
-small "Ascensione" on easter plus 39 days
-"Liberazione" weekend on 25.4
-"Festa del Lavoro" weekend on 1.5
-small "Festa della Repubblica" on 2.6
-small "SS.Pietro e Paolo" on 29.6
-"Assunzione" weekend on 15.8
-small "Ferragosto" on 15.8
-small "S.Francesco" on 4.10
-"Ognissanti" weekend on 1.11
-small "Defunti" on 2.11
-small "Anniversario Vittoria" on 4.11
-"Immacolata" weekend on 8.12
-"Natale" weekend on 25.12
-"S.Stefano" weekend on 26.12
-small "S.Silvestro" on 31.12
+: "weekend" or "red" indicate a "proper" holiday (i.e. you do not work)
+:  Other colours (black, green, yellow, blue, magenta, cyan, white)
+: can be used to distinguish between minor anniversaries or not-so-real
+: holidays, when you go working anyway.
+: "small" holidays are not as "invasive" in the month view in KOrganizer,
+: and do not take as much space.
+
+: Religious holidays (default color for non-weekends: black)
+
+weekend "Epifania" on 6.1
+small black "San Giuseppe" on 19.3
+small black "Giovedì Grasso" on easter minus 52 days
+small black "Martedì Grasso" on easter minus 47 days
+small black "Mercoledì delle Ceneri" on easter minus 46 days
+small black "Prima di Quaresima" on easter minus 42 days
+small black "Seconda di Quaresima" on easter minus 35 days
+small black "Terza di Quaresima" on easter minus 28 days
+small black "Quarta di Quaresima" on easter minus 21 days
+small black "Quinta di Quaresima" on easter minus 14 days
+small black "Domenica delle Palme" on easter minus 7 days
+weekend "Pasqua" on easter
+weekend "Lunedì dell'Angelo" on easter plus 1 day
+small black "Ascensione" on easter plus 42 days
+small black "Pentecoste" on easter plus 49 days
+small black "Santissima Trinità" on easter plus 56 days
+small black "Corpus Domini" on easter plus 63 days
+small black "Sacro Cuore di Gesù" on easter plus 68 days
+small black "Santi Pietro e Paolo" on 29.6
+small black "San Francesco" on 4.10
+weekend "Ognissanti" on 1.11
+small black "Defunti" on 2.11
+weekend "Immacolata Concezione" on 8.12
+small black "Prima d'avvento" on sunday before 24 december minus 21 days
+small black "Seconda d'avvento" on sunday before 24 december minus 14 days
+small black "Terza d'avvento" on sunday before 24 december minus 7 days
+small black "Quarta d'avvento" on sunday before 24 december
+weekend "Natale" on 25.12
+weekend "Santo Stefano" on 26.12
+small black "San Silvestro" on 31.12
+
+: Lay holidays: 1.1 and 15.8 are also religious holidays.
+: (default color for non-weekends: green)
+
+weekend "Capodanno" on 1.1
+small green "Giornata della Memoria" on 27.1
+small green "Giornata del Ricordo" on 10.2
+small green "Festa della donna" on 8.3
+weekend "Anniversario della Liberazione" on 25.4
+weekend "Festa del Lavoro" on 1.5
+weekend "Festa della Repubblica" on 2.6
+weekend "Ferragosto" on 15.8
+small green "Festa dell'Unità nazionale" on 4.11
+
+
+: Daylight savings (blue)
+
+blue "Passaggio all'ora legale" on last sunday in march
+blue "Passaggio all'ora solare" on last sunday in october
+